25A AC-DC Rectifier Filter Power Supply Bare PCB Board

Build your next audio amplifier or electronics project on a solid foundation with this 25A Single AC-DC Rectifier Filter Power Supply Bare PCB. Manufactured in Mainland China, this compact, high-quality FR-4 board is designed for DIY electronics enthusiasts, audio engineers, and hobbyists who want a reliable power supply platform ready for their own components.

⚠️ Please Note: This listing is for the bare PCB only — components (bridge rectifier, capacitors, etc.) are not included.

Key Features

• Material: FR-4 fibreglass PCB — durable, industry-standard substrate
• Board Size: 73 × 73 mm (Length × Width)
• Thickness: 1.6 mm standard
• Surface Finish: Double-sided solder resist for maximum durability and clean soldering
• Max Rectifier Rating: Supports up to 25A bridge rectifier
• Capacitor Footprints: Fits 2 × capacitors (30 mm or 35 mm diameter)
• Non-grounding design for flexible circuit configurations

AC Input Connector Wiring

• AC: AC transformer connection line
• GND: Ground connection to transformer
• Tip: When using a single-voltage transformer, connect only one AC line and GND — the remaining AC terminal stays empty — and the board will still deliver doubled output voltage!

DC Output Interface Wiring

• −Vout: Negative electrical outlet
• GND: Ground
• +Vout: Positive output

What's in the Package

• 1 × Bare PCB (components not included)

Made in Mainland China.

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Frequently Asked Questions

Q: Does this 25A rectifier filter power supply PCB come with components?

A: No — this listing is for the bare PCB board only. You will need to source and solder your own bridge rectifier (up to 25A) and capacitors (30 mm or 35 mm diameter) separately to complete the power supply circuit.

Q: What capacitor sizes fit this rectifier filter power supply board?

A: The board accommodates two capacitors with a diameter of either 30 mm or 35 mm, giving you flexibility to choose capacitance values suited to your audio amplifier or power supply project.

Q: Can this bare PCB be used with a single-voltage transformer?

A: Yes. When using a single-voltage transformer, connect one AC line and GND only, leaving the second AC terminal empty. The board's design will still produce a doubled DC output voltage, making it versatile for a range of audio amplifier builds.

Q: What are the dimensions of this power supply PCB board?

A: The board measures 73 × 73 mm with a standard 1.6 mm thickness. The double-sided solder resist finish ensures durability and ease of assembly for DIY electronics projects.